Monitor stand



FIG. 1 is a front, right side perspective view of a monitor stand showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a front, right perspective of a second embodiment of a monitor stand showing my new design; and,

FIG. 8 is a front, right perspective of a third embodiment of a monitor stand showing my new design. 

The ornamental design for a monitor stand, as shown and described. 